EP 2859497 A1 20150415 - METHOD FOR BACKING-UP DATA OUTSIDE OF A SECURE MICROCIRCUIT
Title (en)
METHOD FOR BACKING-UP DATA OUTSIDE OF A SECURE MICROCIRCUIT
Title (de)
VERFAHREN ZUR SICHERSTELLUNG VON DATEN AUSSERHALB EINER SICHEREN MIKROSCHALTUNG
Title (fr)
PROCEDE DE SAUVEGARDE DE DONNEES A L'EXTERIEUR D'UN MICROCIRCUIT SECURISE
Publication
Application
Priority
- FR 1201677 A 20120612
- FR 2013051004 W 20130506
Abstract (en)
[origin: WO2013186451A1] The invention relates to a method for managing the memory of a secure microcircuit (SE), comprising steps executed by the microcircuit consisting in: forming a data block (BLi) with executable code and/or data stored in a volatile memory (MEM2) of the microcircuit and to be backed-up outside of the microcircuit; calculating a signature (SGi) of the data block using a first signature key; inserting the calculated signature of the data block into a signature block (BLS); obtaining a current value of a non-volatile counter (CNT) inside the microcircuit; calculating a signature (SGG) of the signature block associated with the current value of the internal counter, using a second signature key; and transmitting the data block, the signature block and the signature of the signature block outside of the microcircuit.
IPC 8 full level
G06F 21/77 (2013.01); G06F 21/57 (2013.01); G06F 21/64 (2013.01)
CPC (source: CN EP US)
G06F 12/1466 (2013.01 - US); G06F 21/572 (2013.01 - CN EP US); G06F 21/64 (2013.01 - CN EP US); G06F 21/77 (2013.01 - CN EP US); G09C 1/00 (2013.01 - EP US); H04L 9/0866 (2013.01 - EP US); H04L 9/3247 (2013.01 - EP US); H04L 2209/805 (2013.01 - EP US)
Citation (search report)
See references of WO 2013186451A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 2991796 A1 20131213; CN 104380305 A 20150225; EP 2859497 A1 20150415; EP 2859497 B1 20200729; US 2015113243 A1 20150423; WO 2013186451 A1 20131219
DOCDB simple family (application)
FR 1201677 A 20120612; CN 201380031025 A 20130506; EP 13727261 A 20130506; FR 2013051004 W 20130506; US 201314396428 A 20130506